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| author | Dmitry V. Levin <ldv@altlinux.org> | 2018-04-13 17:19:02 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-05 11:29:42 -0700 |
| commit | 1c1ff29da6c86864e73b05d4301a2df1d161f2da (patch) | |
| tree | bd4a878092d4bc73d6502a1506bb07c2c81e60ed /drivers/char | |
| parent | 2b1f6a04f52b426158362f05eec24f6456d5fea7 (diff) | |
sparc: fix compat siginfo ABI regression
Starting with commit v4.14-rc1~60^2^2~1, a SIGFPE signal sent via kill
results to wrong values in si_pid and si_uid fields of compat siginfo_t.
This happens due to FPE_FIXME being defined to 0 for sparc, and at the
same time siginfo_layout() introduced by the same commit returns
SIL_FAULT for SIGFPE if si_code == SI_USER and FPE_FIXME is defined to 0.
Fix this regression by removing FPE_FIXME macro and changing all its users
to assign FPE_FLTUNK to si_code instead of FPE_FIXME.
Note that FPE_FLTUNK is a new macro introduced by commit
266da65e9156d93e1126e185259a4aae68188d0e.
Tested with commit v4.16-11958-g16e205cf42da.
This bug was found by strace test suite.
Link: https://github.com/strace/strace/issues/21
Fixes: cc731525f26a ("signal: Remove kernel interal si_code magic")
Thanks-to: Anatoly Pugachev <matorola@gmail.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions